An underwater intelligent dredging device

Abstract

The present invention relates to the technical field of river dredging, and specifically provides an underwater intelligent dredging device, comprising two mutually parallel supporting shafts, two cutting suction drums are respectively connected to the two supporting shafts, a discharge outlet is provided on one end of the cutting suction drum close to the supporting shaft, and a cutting suction port is provided on one end of the cutting suction drum away from the supporting shaft, two spiral augers are arranged between the two cutting suction drums, and a crushing cone is arranged between the two spiral augers. The two spiral augers rotate to transport silt to the cutting suction port, thereby increasing the amount of silt sucked per unit time and making the range of silt sucked by the cutting suction port larger, the crushing cone can break up lumps or hard silt, and the silt is crushed for the second time by the spiral augers, making it easier to suck. The support shaft drives the cutting suction drum and the spiral augers to move closer or farther away, and can adjust the state according to the silt situation, reduce the suction pressure of the cutting suction port, and improve the dredging efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of river dredging, and in particular to an underwater intelligent dredging device. Background Art

[0002] A river dredging device is a device used to remove river sediment (such as mud, humus, garbage, etc.) in order to improve water flow conditions, prevent floods, protect the ecological environment, and enhance the navigability of waterways.

[0003] For example, Chinese patent CN113309165B discloses a suction-type ecological dredging device and method, which includes a hull and a control room arranged on the hull, a suction mechanism and a winch mechanism for controlling the activity of the suction mechanism installed on the hull, the suction mechanism includes a mud suction pipe, a delivery pipe is provided in the mud suction pipe, the mud suction pipe is connected to the suction head through a mounting seat on the side away from the control room, and the mud outlet end of the delivery pipe is connected to the sewage pipe through a mud pump. The scheme continuously rotates and cuts the underwater soil layer by rotating the suction head, so that the soil layer is separated and mixed with the clean water in the excavation trench, and the mud and water enter the delivery pipe through the suction head. When the suction head contacts the soil layer, it will drive the crushing parts to contact the soil layer, and the two sets of crushing rollers rotate in opposite directions. After the soil around the crushing rollers is cut, it is sucked away by the suction force of the suction head and can be mixed with water by the suction head.

[0004] However, the suction head in the above scheme requires a large amount of water to be mixed into mud before it can be sucked, and the sludge concentration is relatively low. The suction head of the suction dredging device in the prior art has a relatively small coverage area for dredging, and requires frequent movement to complete a larger range of dredging tasks. Summary of the Invention

[0005] Based on this, it is necessary to provide an underwater intelligent dredging device to address the problem of low dredging efficiency of the dredging head of the current dredging device.

[0006] The above purpose is achieved through the following technical solutions:

[0007] An underwater intelligent dredging device, comprising:

[0008] A support frame, wherein the support frame is provided with two mutually parallel support shafts, and the two support shafts can move closer to or farther away from each other;

[0009] Two cutter suction drums, the two cutter suction drums are parallel to each other and are respectively connected to the two support shafts, the angle between the cutter suction drum and the support shaft is an obtuse angle, the two cutter suction drums are provided with a cutter suction port on one end away from the two support shafts, and the two cutter suction drums are provided with a discharge port on one end close to the two support shafts;

[0010] Two spiral augers, the ends of the two spiral augers close to each other are hinged, and the ends of the two spiral augers away from each other are connected to the suction ports of the two cutter suction drums. When the two spiral augers rotate around their own axes, they can transport silt to the suction ports of the two cutter suction drums;

[0011] A crushing cone is provided at a hinged position of the two spiral augers, and the crushing cone has a pointed end.

[0012] Furthermore, a connecting pipe is fixedly connected to the suction port of each of the two cutting suction cylinders, and the connecting pipe is coaxial with the cutting suction cylinder. A hinge ball is fixedly provided on the outer periphery of the end of the connecting pipe, and a connecting block is connected to the outer periphery of the hinge ball. The interior of the connecting block is hollow and one end is open. The open end of the connecting block is rotatably connected to the spiral auger, and the connecting pipe is communicated with the interior of the connecting block.

[0013] Furthermore, a first telescopic rod is provided between the two connecting blocks, a second telescopic rod is fixedly provided at the middle position of the first telescopic rod, the second telescopic rod is fixedly connected to the crushing cone, and the axis of the second telescopic rod is perpendicular to the axis of the first telescopic rod.

[0014] Furthermore, a first drive motor is fixedly provided on the connecting block, and a rotating shaft of the first drive motor is coaxially and fixedly connected to the spiral auger.

[0015] Furthermore, a baffle is fixedly connected to the connecting block, and the baffle is located above the spiral auger.

[0016] Furthermore, a filter cartridge is coaxially and fixedly arranged inside the cutter suction cylinder, a plurality of filter holes are opened on the outer periphery of the filter cartridge, a conveying auger is coaxially and rotatably arranged inside the filter cartridge, the blade pitch of the conveying auger gradually decreases in the direction from the cutter suction port to the discharge port, a drain port is arranged on the outer periphery of the cutter suction cylinder, and the drain port is connected to the cavity between the inner periphery of the cutter suction cylinder and the outer periphery of the filter cartridge.

[0017] Furthermore, the filter holes on the filter cartridge are opened at a position close to the drain outlet.

[0018] Furthermore, a second drive motor is fixedly provided on the cutter suction drum, and a rotating shaft of the second drive motor is coaxially and fixedly connected to the conveying auger.

[0019] Furthermore, a spiral rod is rotatably provided on the support frame, and both ends of the spiral rod are spirally connected to the two support shafts respectively, and the axis of the spiral rod is perpendicular to the axes of the two support shafts.

[0020] Furthermore, the angle between the support shaft and the cutter suction drum is negatively correlated with the water depth.

[0021] The beneficial effects of the present invention are:

[0022] The present invention transports the silt to the suction port through the rotation of two spiral augers, increasing the amount of silt sucked per unit time and making the silt sucked by the suction port cover a wider range. The crushing cone can break up the agglomerated or hard silt, and the silt is crushed twice by the spiral augers, making it easier to absorb. The support shaft drives the suction cylinder and the spiral augers to move closer or farther, and can adjust its state according to the silt situation, reducing the suction pressure of the suction port and improving the dredging efficiency.

[0023] The present invention arranges a filter cartridge and a conveying auger in the cutter suction cylinder, and the pitch of the conveying auger blades is reduced to squeeze the sludge, water is discharged through the filter holes and the water outlet, and the sludge is discharged from the outlet, thereby achieving effective separation of sludge and water.

[0024] The angle between the support shaft and the suction drum of the present invention is negatively correlated with the water depth and can be adjusted according to the water depth to ensure that the spiral auger contacts the underwater silt for more thorough cleaning. The rotation of the spiral rod can adjust the distance between the two support shafts, so that the equipment can adapt to different silt amounts and distribution conditions.

[0025] The present invention provides a baffle on the connecting block, and the baffle cooperates with the spiral auger to guide the silt when the hull retreats, thereby improving the silt gathering ability and enhancing the efficiency and quality of the dredging operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of an underwater intelligent dredging device provided in one embodiment of the present invention;

[0027] Figure 2 for Figure 1 A front view of an underwater intelligent dredging device provided in one embodiment;

[0028] Figure 3 for Figure 2 A cross-sectional view of an underwater intelligent dredging device along line AA provided in one embodiment;

[0029] Figure 4 A schematic diagram of the structure of a cutter suction drum of an underwater intelligent dredging device provided in one embodiment of the present invention;

[0030] Figure 5 for Figure 4 A right side view of a cutter suction drum of an underwater intelligent dredging device provided in one embodiment;

[0031] Figure 6 for Figure 5 A cross-sectional view of a cutter suction drum of an underwater intelligent dredging device provided in one embodiment along line BB;

[0032] Figure 7 A schematic diagram of the first state structure of an underwater intelligent dredging device provided by one embodiment of the present invention;

[0033] Figure 8This is a schematic diagram of the second state structure of the underwater intelligent dredging device provided by one embodiment of the present invention.

[0034] in:

[0035] 100, support shaft; 110, screw rod; 120, spiral groove; 130, positioning seat; 140, hinged joint;

[0036] 200, cutter suction cylinder; 210, cutter suction port; 220, discharge port; 230, water outlet; 240, connecting pipe; 250, hinge ball; 260, hinge ear; 270, filter cartridge; 271, filter hole; 280, conveying auger;

[0037] 300, spiral auger; 310, crushing cone; 320, connecting block; 330, first telescopic rod; 340, second telescopic rod; 350, baffle;

[0038] 400, first drive motor; 410, second drive motor. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0041] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] Refer to the following Figures 1-8 To describe an underwater intelligent dredging device provided by the present invention.

[0043] The slurry collecting device is provided with two supporting shafts 100 which are parallel to each other and can move closer to or farther away from each other. Two suction drums 200 are connected to one end of the two supporting shafts 100 respectively, and the two suction drums 200 are also parallel to each other. The angle between the support shafts 100 and the suction drums 200 is an obtuse angle, so that the suction drums 200 can extend underwater. Suction ports 210 are provided on the ends of the two suction drums 200 away from the two supporting shafts 100. The suction ports 210 are used to suck up a mixture of slurry and water, and discharge ports 220 are provided on the ends of the two suction drums 200 close to the two supporting shafts 100. The discharge ports 220 are used to discharge the mixture of slurry and water sucked up by the suction drums 200, thereby cleaning the underwater slurry.

[0044] When the cutter suction drum 200 sucks up a mixture of silt and water, if the underwater silt is not scraped up, the silt sucked up by the cutter suction drum 200 will contain more water, thereby reducing the silt cleaning efficiency. When the underwater silt is scraped up, the silt content in the water increases, thereby increasing the silt content in the mixture sucked up by the cutter suction drum 200, and increasing the amount of silt sucked per unit time, thereby improving the efficiency of cleaning the silt.

[0045] Two spiral augers 300 are provided at the suction ports 210 of the two suction drums 200. The ends of the two spiral augers 300 that are close to each other are hinged, and the ends of the two spiral augers 300 that are away from each other are provided at the suction ports 210. When the two spiral augers 300 rotate around their own axes, they can transport the sludge (transportation means that the spiral augers 300 can generate a force that pushes water toward the suction port 210 when they rotate) to the two suction ports 210. The suction drum 200 sucks the sludge at the suction port 210 into the suction drum 200 and then discharges it from the discharge port 220, thereby greatly improving the sludge cleaning efficiency. In addition, the provision of the two spiral augers 300 can increase the range of sludge sucking by the suction port 210. Compared with the traditional suction head, the sludge can be sucked over a large area without frequent movement.

[0046] The two spiral augers 300 of the present invention are provided with a crushing cone 310 at one end close to each other. The crushing cone 310 has a tip. When the hull moves forward, the tip of the crushing cone 310 faces the direction of the hull. Figure 7 As shown, the whole moves to the right. When the crushing cone 310 encounters underwater lumps or relatively hard silt, it can break up the lumps or relatively hard silt. In addition, due to the rotation of the two spiral augers 300, the broken silt is crushed for the second time by the spiral augers 300, thereby making the silt crushing effect better. The crushed silt is then transported by the spiral augers 300 to approach the suction port 210 of the suction drum 200.

[0047] It should be noted that, since the two support shafts 100 of the present invention can move closer to or farther from each other, the two support shafts 100 synchronously drive the two cutter suction drums 200 to move closer to or farther from each other. When the two cutter suction drums 200 move closer to or farther from each other, the states of the two spiral augers 300 can be changed, such as Figure 7 As shown, when the two support shafts 100 approach each other, they drive the two cutter suction drums 200 to approach each other, and the two cutter suction drums 200 drive the ends of the two spiral augers 300 that are away from each other to approach each other, so that the two spiral augers 300 form an angle. The closer the two support shafts 100 are, the smaller the angle formed by the two spiral augers 300 is. The two spiral augers 300 in this state are suitable for cleaning situations where there is less silt and it is clumped or relatively hard.

[0048] When there is a lot of silt under the water, and the silt is not lumpy or hard, the above-mentioned two spiral augers 300 can still be used, but the hull needs to move in the opposite direction, that is, the hull drives the two spiral augers 300 with an included angle to move to the left, and the underwater silt will be gathered at a position close to the crushing cone 310 by the two spiral augers 300 with an included angle, and then the two spiral augers 300 will transport the silt gathered at the position of the crushing cone 310 to the suction port 210, which can reduce the pressure of the suction port 210 to absorb the silt. It can be understood that if there is a lot of underwater silt, the suction port 210 will not be as heavy as the original one. When the cylinder 200 sucks up silt, a large amount of silt will be blocked at the cutter suction port 210. At this time, the suction pressure of the cutter suction port 210 is large. When the hull moves in the opposite direction, the silt will be guided by the two spiral augers 300 and gathered at the crushing cone 310. Since the two spiral augers 300 have an angle, the two spiral augers 300 are inclined. Under the movement of the hull, the silt can be first gathered at the crushing cone 310, and then the silt gathered at the crushing cone 310 will be transported to the cutter suction port 210 under the rotation of the two spiral augers 300, thereby reducing the suction pressure at the cutter suction port 210.

[0049] When the two support shafts 100 are away from each other, as shown in FIG. Figure 8 As shown, the distance between the two support shafts 100 is the farthest. At this time, the rotating shafts of the two spiral augers 300 are almost on the same straight line. The state of the two spiral augers 300 is used to clean the underwater silt in a moderate condition. At this time, the hull can move forward or backward. If there are lumps or relatively hard silt in the silt in a moderate condition, the hull moves forward, so that the crushing cone 310 plays a certain crushing function. If there are no lumps or relatively hard silt in the silt in a moderate condition, the hull can move backward. Under the action of the rotation of the two spiral augers 300, the silt is broken up and mixed in the water, and the suction port 210 of the suction drum 200 continuously absorbs silt and water to perform dredging operations.

[0050] Specifically, in this embodiment, a connecting pipe 240 is fixedly provided on the two suction ports 210 of the two cutting suction drums 200, and the connecting pipe 240 is communicated with the cutting suction port 210. The connecting pipe 240 is coaxial with the cutting suction drum 200. The outer periphery of the connecting pipe 240 away from the cutting suction port 210 is coaxial and fixedly sleeved with a hinge ball 250. The hinge ball 250 is hollow, and the outer ball of the hinge ball 250 is connected to a connecting block 320. The connecting block 320 is also hollow, and one end of the connecting block 320 is open. The open end of the connecting block 320 is inserted into the spiral auger 300, and the spiral auger 300 is rotatably connected to the connecting block 320. The connecting pipe 240 is connected to the inside of the connecting block 320 through the hinge ball 250. When the spiral auger 300 rotates, the underwater silt will be transported to the connecting block 320, and the silt enters the cutting suction port 210 of the cutting suction drum 200 through the connecting pipe 240.

[0051] It should be noted that if Figure 3 As shown, in order to facilitate the ball connection between the connecting block 320 and the articulated ball 250, a circular hole is opened on one end of the connecting block 320, and an arc-shaped plate is fixedly provided on the inner wall of the circular hole. The arc-shaped plate adapts to the shape of the articulated ball 250 and the inner wall of the arc-shaped plate is in smooth contact with the outer periphery of the articulated ball 250, so that the articulated ball 250 can be ball-connected with the connecting block 320, and the two spiral augers 300 can change the angle when the two screw suction cylinders 200 approach or move away from each other.

[0052] More specifically, in order to enable the two spiral augers 300 to rotate around their own axes to transport the sludge to the two suction ports 210, the present invention has first drive motors 400 fixedly arranged on the two connecting blocks 320, and the rotating shafts of the two first drive motors 400 are coaxial with and fixedly connected to the two spiral augers 300, and the rotation directions of the two spiral augers 300 are opposite, and the rotation directions of the two first drive motors 400 are the same, so that the two spiral augers 300 can transport the sludge to the two suction ports 210 respectively.

[0053] In order to improve the connection strength of the crushing cone 310, as Figure 7 As shown, a first telescopic rod 330 is provided between the two connecting blocks 320, and both ends of the first telescopic rod 330 are hinged at the bottom of the two connecting blocks 320 respectively. A second telescopic rod 340 is fixedly connected to the middle position of the first telescopic rod 330, and the axis of the second telescopic rod 340 is perpendicular to the axis of the first telescopic rod 330. The other end of the second telescopic rod 340 is fixedly connected to the crushing cone 310, forming a stable cross-shaped connection structure, thereby increasing the connection strength of the crushing cone 310.

[0054] It should be noted that the second telescopic rod 340 and the crushing cone 310 are on the same plane. Since the two spiral augers 300 are connected to the suction cylinder 200 through two connecting blocks 320, when the axes of the two spiral augers 300 are in a state of almost overlapping, the two connecting blocks 320 and the articulated ball 250 will rotate when the hull moves forward or backward. Therefore, the second telescopic rod 340 and the crushing cone 310 are in contact with the underwater bottom surface to prevent the two connecting blocks 320 and the articulated ball 250 from rotating.

[0055] During operation, when the two support shafts 100 approach each other due to operational requirements, the connecting blocks 320 at both ends of the two auger 300 also move closer to each other. During this dynamic process, the first telescopic rod 330 shortens accordingly due to the reduced spacing between the connecting blocks 320. At the same time, due to the special mechanical relationship between the first telescopic rod 330 and the second telescopic rod 340, the shortening of the first telescopic rod 330 causes the extension of the second telescopic rod 340. Conversely, when the two connecting blocks 320 move away from each other due to external forces, the first telescopic rod 330 extends, while the second telescopic rod 340 shortens accordingly.

[0056] Through the coordinated telescopic changes between the first telescopic rod 330 and the second telescopic rod 340, no matter what complex operating state the equipment is in, it can always ensure that the crushing cone 310 has sufficient and stable connection strength. Compared with the traditional single connection method, this design scheme significantly enhances the stability and reliability of the crushing cone 310 in the face of various complex working conditions, effectively reduces the risk of equipment failure or reduced operating efficiency due to loose connection, provides a solid guarantee for efficient and stable dredging operations, and greatly improves the performance and service life of the entire dredging equipment.

[0057] In a further embodiment, to improve the ability of the two spiral augers 300 to gather silt, as Figure 1 and Figure 2 As shown, baffles 350 are fixedly connected to the two connecting blocks 320. The length of the baffles 350 is similar to the length of the spiral augers 300. The two baffles 350 are respectively located above the two spiral augers 300, and the two baffles 350 are tilted. The two baffles 350 are tilted in the direction away from the crushing cone 310, so that when the hull pulls the two spiral augers 300 backward, the silt is not only guided by the spiral augers 300, but also by the baffles 350, thereby improving the ability to gather silt.

[0058] The design of the spiral auger 300 and the baffle 350 working in coordination with each other greatly improves the ability to gather silt. Compared with the situation of relying solely on the spiral auger 300, the addition of the baffle 350 greatly improves the silt gathering efficiency, and can collect more silt in a shorter time, laying a solid foundation for subsequent silt treatment work and effectively improving the efficiency and quality of the entire dredging operation process.

[0059] Specifically, in this embodiment, a conveying auger 280 is coaxially and fixedly provided inside the cutter suction cylinder 200. When the conveying auger 280 rotates around its own axis, the silt and water in the cutter suction cylinder 200 can be transported from the cutter suction port 210 to the discharge port 220, thereby realizing the function of the cutter suction cylinder 200 to absorb the silt. In order to separate the silt and water, the present invention coaxially and fixedly provides a filter cartridge 270 inside the cutter suction cylinder 200. The outer periphery of the filter cartridge 270 is provided with a plurality of filter holes 271, and the conveying auger 280 is coaxially and fixedly provided inside the filter cartridge 270. At the same time, the blade pitch of the conveying auger 280 is adjusted at the cutter suction port 210. 10 gradually decreases in the direction from the discharge port 220, so that the space where the silt entering the inside of the cutter suction drum 200 is located gradually decreases when it is transported by the conveying auger 280, thereby causing the silt to be continuously squeezed, and the squeezed water is discharged into the space between the inner periphery of the cutter suction drum 200 and the outer periphery of the filter drum 270 through the filter holes 271 on the filter drum 270. In order to facilitate the discharge of water, a water outlet 230 is provided on the outer periphery of the cutter suction drum 200. The water outlet 230 is connected to the cavity between the inner periphery of the cutter suction drum 200 and the outer periphery of the filter drum 270. The water in the cavity can be discharged through the water outlet 230. Figure 4 and Figure 6 As shown, the height of the water outlet 230 is lower than that of the discharge port 220 . After the water is discharged through the water outlet 230 , the squeezed silt is discharged through the discharge port 220 .

[0060] It should be noted that the water outlet 230 and the drain port 220 of the present invention can be connected to a drain pipe (not shown) and a mud discharge pipe (not shown), the lengths of which can be adjusted as needed. The filter holes 271 on the filter cartridge 270 of the present invention are primarily located near the water outlet 230, allowing water squeezed out of the mud to quickly drain out of the water outlet 230.

[0061] Specifically, in order to realize the rotation of the conveying auger 280, a second drive motor 410 is fixedly provided on the end of the cutter suction cylinder 200 away from the cutter suction port 210, and the two cutter suction cylinders 200 are fixedly provided with a second drive motor 410, and the rotating shafts of the two second drive motors 410 are respectively coaxial with the two conveying annular auger 280 and fixedly connected. When the rotating shafts of the two second drive motors 410 rotate and drive the two conveying annular auger 280 to rotate synchronously, the conveying auger 280 sucks the silt in the cutter suction cylinder 200 from the cutter suction port 210, and transports the silt to the discharge port 220.

[0062] In a further embodiment, in order to realize the function of the two support shafts 100 approaching or moving away from each other, the present invention has a spiral rod 110 rotatably arranged on the support frame, the axis of the spiral rod 110 is perpendicular to the axes of the two support shafts 100, and the two ends of the spiral rod 110 are respectively spirally connected to the two support shafts 100, and spiral grooves 120 are provided on both ends of the spiral rod 110, and the rotation directions of the two thread grooves are also opposite. When the spiral rod 110 rotates, it can drive the two support shafts 100 to approach or move away from each other through the two spiral grooves 120 with opposite rotation directions. It should be noted that the two support shafts 100 in this embodiment are provided with guide rails (not shown in the figure), which make the two support shafts 100 only approach or move away from each other, and the two support shafts 100 will not tilt.

[0063] Specifically, the middle position of the screw rod 110 is rotatably connected to the positioning seat 130, which is fixed on the hull. An electric motor (not shown in the figure) is provided on the positioning seat 130, and the rotating shaft of the motor is engaged with the outer periphery of the screw rod 110. When the motor rotates, it can drive the screw rod 110 to rotate, and the screw rod 110 pulls or pushes the two support shafts 100 closer to or away from each other.

[0064] In a further embodiment, in order to enable the two spiral augers 300 to adapt to waters of different depths, the present invention arranges the support shaft 100 and the cutter suction drum 200 as an angle-adjustable structure, and the angle between the support shaft 100 and the cutter suction drum 200 is negatively correlated with the water depth. The water depth is measured before performing dredging operations, and the angle between the support shaft 100 and the cutter suction drum 200 is adjusted according to the water depth, so that the two spiral augers 300 can just contact the underwater silt, thereby ensuring that the underwater silt is thoroughly cleaned. In the initial state, the angle between the support shaft 100 and the cutter suction drum 200 is an obtuse angle. When the water depth is large, the angle between the support shaft 100 and the cutter suction drum 200 can be appropriately reduced. When the water depth is small, the angle between the support shaft 100 and the cutter suction drum 200 can be appropriately increased.

[0065] Specifically, a hinged joint 140 is fixedly provided on one end of the support shaft 100 close to the cutter suction drum 200, and a hinged ear 260 is fixedly provided on one end of the cutter suction drum 200 close to the support shaft 100. Both the hinged joint 140 and the hinged ear 260 are provided with connecting holes, and a fastening bolt is inserted into the connecting hole, and a fastening nut is threadedly connected to the fastening bolt. When the angle needs to be adjusted, the fastening nut is loosened, and then the angle of the support shaft 100 and the cutter suction drum 200 is adjusted. It should be noted that the two support shafts 100 and the two cutter suction drums 200 need to adjust the angle synchronously. After the angle adjustment is completed, the two fastening nuts are tightened at the same time to fix the angle to prevent the angle from changing during the dredging operation.

[0066] The specific working process of an underwater intelligent dredging device provided by the present invention is described in combination with the above embodiments:

[0067] Adjust the angle between the support shaft 100 and the cutter suction drum 200:

[0068] Before carrying out dredging operations, the water depth is measured first, and the angle between the support shaft 100 and the cutter suction drum 200 is adjusted according to the water depth. When the water is deep, the angle between the support shaft 100 and the cutter suction drum 200 gradually approaches a right angle from an obtuse angle, thereby increasing the distance that the two spiral augers 300 extend into the water. When the water is shallow, the angle between the support shaft 100 and the cutter suction drum 200 gradually increases, thereby reducing the distance that the two spiral augers 300 extend into the water, ensuring that the two spiral augers 300 can contact the underwater silt.

[0069] Adjust the angle between the two augers 300:

[0070] Before carrying out the dredging operation, it is necessary to measure the underwater silt conditions. When there is little underwater silt and the silt is not clumping or relatively hard, the screw rod 110 can be driven to rotate by controlling the motor (not shown in the figure). The screw rod 110 drives the two support shafts 100 to approach each other, and the two support shafts 100 drive the two suction drums 200 to approach each other. The two suction drums 200 drive the two ends of the two spiral augers 300 that are away from each other to approach each other, so that the angle between the two spiral augers 300 gradually decreases, and the hull (not shown in the figure) drives the two spiral augers 300 to move forward along the angle formed by them; when there is a lot of underwater silt and there is no clumping or relatively hard silt, the state of the two spiral augers 300 is the same as the above state, except that the direction of movement of the two spiral augers 300 is changed, and the hull drives the two spiral augers 300 to move in the opposite direction of the angle formed by them; if the underwater silt is moderate, the motor rotates in the opposite direction to drive the screw rod 110 to rotate in the opposite direction, so that the two support shafts 100 are away from each other, and form a Figure 8 In the state shown, the distance between the two support shafts 100 reaches the maximum. At this time, the axes of the two spiral augers 300 are almost coincident. The hull can pull the two spiral augers 300 forward or backward. If the underwater silt is clumped or relatively hard, the hull moves forward to allow the crushing cone 310 between the two spiral augers 300 to break up the clumped silt or relatively hard silt. If the underwater silt is not clumped or relatively hard, the hull can move backward.

[0071] Start dredging:

[0072] The two first drive motors 400 and the two second drive motors 410 are started, and the hull is driven forward or backward. The two first drive motors 400 drive the two spiral augers 300 to rotate around their own axes, thereby having a certain crushing effect on the underwater silt and being able to transport the underwater silt toward the cutter suction port 210. The two second drive motors 410 drive the conveying augers 280 in the cutter suction drum 200. The two conveying augers 280 rotate to suck the silt and water into the cutter suction drum 200 together, and the pitch of the two conveying augers 280 gradually decreases in the direction from the cutter suction port 210 to the discharge port 220, so that the silt sucked into the cutter suction drum 200 is gradually squeezed, and the squeezed water is discharged through the water outlet 230 on the cutter suction drum 200, and the silt is discharged through the discharge port 220. A water outlet pipe (not shown in the figure) can be connected to the water outlet 230 to discharge the water, or a mud discharge pipe (not shown in the figure) can be connected to the discharge port 220 to discharge the silt.

[0073] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An underwater intelligent dredging device, characterized in that: include: The support frame is provided with two mutually parallel support shafts; a spiral rod is rotatably provided on the support frame, and the two ends of the spiral rod are respectively spirally connected to the two support shafts, and the axis of the spiral rod is perpendicular to the axes of the two support shafts; Two cutter suction drums, the two cutter suction drums are parallel to each other and are respectively connected to the two support shafts, the angle between the cutter suction drum and the support shaft is an obtuse angle, the two cutter suction drums are provided with a cutter suction port on one end away from the two support shafts, and the two cutter suction drums are provided with a discharge port on one end close to the two support shafts; Two spiral augers, the ends of the two spiral augers close to each other are hinged, and the ends of the two spiral augers away from each other are connected to the suction ports of the two cutter suction drums. When the two spiral augers rotate around their own axes, they can transport silt to the suction ports of the two cutter suction drums; A crushing cone is provided at the hinged position of the two spiral augers, and the crushing cone has a pointed end; The suction ports of the two cutting suction cylinders are fixedly connected with connecting pipes, which are coaxial with the cutting suction cylinders. A hinge ball is fixedly provided on the outer periphery of the end of the connecting pipe. A connecting block is connected to the outer periphery of the hinge ball. The connecting block is hollow inside and open at one end. The open end of the connecting block is rotatably connected to the spiral auger, and the connecting pipe is connected to the inside of the connecting block; A first telescopic rod is provided between the two connecting blocks, a second telescopic rod is fixedly provided in the middle of the first telescopic rod, the second telescopic rod is fixedly connected to the crushing cone, and the axis of the second telescopic rod is perpendicular to the axis of the first telescopic rod; The two support shafts can move closer to or farther away from each other, so that the two support shafts synchronously drive the two cutter suction drums closer to or farther away from each other. When the two spiral augers are tilted and have an angle, the silt can be first gathered at the crushing cone when the hull moves in the opposite direction, and then the silt gathered at the crushing cone is transported to the cutter suction port under the rotation of the two spiral augers, thereby reducing the suction pressure at the cutter suction port.

2. The underwater intelligent dredging device according to claim 1, characterized in that: A first drive motor is fixedly arranged on the connecting block, and a rotating shaft of the first drive motor is coaxially and fixedly connected to the spiral auger.

3. The underwater intelligent dredging device according to claim 2, characterized in that: A baffle is fixedly connected to the connecting block and is located above the spiral auger.

4. The underwater intelligent dredging device according to claim 1, characterized in that: A filter cartridge is coaxially and fixedly arranged inside the cutter suction cylinder, a plurality of filter holes are opened on the outer periphery of the filter cartridge, a conveying auger is coaxially and rotatably arranged inside the filter cartridge, the blade pitch of the conveying auger gradually decreases in the direction from the cutter suction port to the discharge port, a drain outlet is arranged on the outer periphery of the cutter suction cylinder, and the drain outlet is connected to the cavity between the inner periphery of the cutter suction cylinder and the outer periphery of the filter cartridge.

5. The underwater intelligent dredging device according to claim 4, characterized in that: The filter holes on the filter cartridge are located near the drain outlet.

6. The underwater intelligent dredging device according to claim 4, characterized in that: A second drive motor is fixedly arranged on the cutter suction drum, and a rotating shaft of the second drive motor is coaxially and fixedly connected to the conveying auger.

7. The underwater intelligent dredging device according to claim 1, characterized in that: The angle between the support shaft and the cutter suction drum is negatively correlated with the water depth.

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